Chemically-strengthened glass-encapsulated glass articles and process therefor
Abstract
Abstract FORMING GLASS ARTICLES BY ENCAPSULATING A MAIN BODY OF A BASE GLASS COMPOSITION WITH A GLASS OF A DIFFERENT, DENSER COMPOSITION DURING THE GLASS GOB-FORMING STAGE, FORMING A GLASS ARTICLE FROM THE GOB WHEREIN THE MAIN BODY PORTION IS OF THE BASE GLASS AND HAS AT LEAST ITS OUTER SURFACE COVERED BY THE ENCAPSULATING GLASS AND HEAT TREATING THE ARTICLE TO PROVIDE AN ALKALI METAL ION EXCHANGE BETWEEN ABUTTING GLASS SURFACES SO THAT THE SURFACE OF THE BASE GLASS BODY IS UNDER TENSION AND THE SURFACE OF THE ENCAPSULATING GLASS IS UNDER COMPRESSION. THE OUTER SURFACE OF THE ARTICLE MAY SUBSEQUENTLY BE SUBJECTED TO AN IONEXCHANGE TREATMENT TO FURTHER INCREASE ITS COMPRESSIVE STRESS.
Inventors
- 👤 J Monks
- 👤 E Grubb
- 👤 F Hammer
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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